[kolla-ansible] [cinder-backup] does support HA?

good afternoon, i was trying cinder-backup, deployed on 2 containers. the first one seems to do all work, the second is sitting idle. I have a couple of questions: 1. can i parallelize backup jobs so are ran on both containers? 2. in case of first container down, the second seems not to be able to do backups/restores, nay clue? thank you.